(19)
(11) EP 1 481 738 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.05.2006 Bulletin 2006/19

(43) Date of publication A2:
01.12.2004 Bulletin 2004/49

(21) Application number: 04016458.4

(22) Date of filing: 26.03.1999
(51) International Patent Classification (IPC): 
B06B 1/06(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 26.03.1998 US 79428 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
99914182.3 / 1066119

(71) Applicants:
  • Exogen Inc.
    Piscataway, NJ 08855 (US)
  • Rutgers, The State University of New Jersey
    Piscataway, NJ 08854-8010 (US)

(72) Inventors:
  • Cornejo, Ivan A.
    Highland Park NJ 08904 (US)
  • Jadidian, Bahram
    H-10 Dayton NJ 08810 (US)
  • Safari, A.
    Princeton Junction NJ 08550 (US)
  • Winder, Alan A.
    Westport CT 06880 (US)

(74) Representative: Laufhütte, Dieter et al
Lorenz-Seidler-Gossel Widenmayerstrasse 23
80538 München
80538 München (DE)

   


(54) ULTRASONIC ARRAYS OF FLEXIBLE PIEZOELECTRIC TRANSDUCER ELEMENTS


(57) A piezoelectric composite transducer element comprising:

a fiber sheet formed from fibers extruded from a composition containing a piezoelectric material, the fiber sheet being rolled about a common axis to define a generally spiral configuration, overlapping segments of the spiral defining a gap therebetween, the gap being filled with a first polymeric material.






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